By Bradley Holt
If you must use CouchDB to help real-world purposes, you have to to create MapReduce perspectives that allow you to question this document-oriented database for significant information. With this brief and concise publication, you are going to how to create a number of MapReduce perspectives that will help you question and mixture info in CouchDB’s huge, disbursed datasets.
You'll get step by step directions and plenty of pattern code to create and discover numerous MapReduce perspectives during the process the publication, utilizing an instance database you build. To paintings with those various perspectives, you’ll easy methods to use the Futon internet management console and the cURL command line software that include CouchDB.
- Learn how the Map and decrease steps paintings independently and jointly to index your data
- Use the instance database to create numerous transitority perspectives in accordance with diversified criteria
- Convert your transitority perspectives to everlasting perspectives inside a layout document
- Learn a number of recommendations for querying the information inside of your views
- Limit the variety of effects again, pass a few effects, or opposite the order of the output
- Group your effects via distinctive keys or by way of components of keys
Bradley Holt, co-founder of the artistic prone enterprise chanced on Line, is an internet developer and entrepreneur ten years of Hypertext Preprocessor and MySQL event. He started utilizing CouchDB prior to the discharge of model 1.0. Bradley is an energetic member of the Hypertext Preprocessor group, and will be reached at bradley-holt.com.
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